JavaScript Full Course: Introduction & Basics 📖

Ever wondered why we can't just use a powerful language like C++ to build websites? If you already know HTML and CSS, why was it necessary to invent a whole new language called JavaScript?
In this deep dive, we travel back to the dawn of the interactive web (around 1995) to uncover the critical reasons—security, hardware limitations, and accessibility—that made C++ a non-starter for the browser and paved the way for JavaScript's domination. We'll look at real code examples that show just how dangerous C++ could have been on the open web.
This video is for web developers who want to understand the 'why' behind their tools, C++ programmers curious about web constraints, and anyone fascinated by the history of technology.

🎓 WHAT YOU'LL LEARN IN THIS VIDEO:
(Pro Tip: Add the actual timestamps from your video next to each point!)
[00:00] Introduction: The Need for an Interactive Web
Why HTML and CSS aren't enough.
Comparing a simple "Hello, World" in C++ vs. JavaScript.
The Security Nightmare of C++ in a Browser
Why a "sandbox" is essential for web safety.
Live Code Demo: How C++ could access your local files (secrets.txt).
Live Code Demo: How C++ could run destructive system commands (rm -rf /).
Live Code Demo: How C++ pointers could access raw memory.
Live Code Demo: How C++ could bypass browser networking rules.
Back to 1995: The Hardware That Shaped the Web
A look at typical PC specs from 1995 (4-8MB of RAM!).
Why running a heavy C++ runtime in a browser was impossible on the hardware of the day.
The Hidden Hero: Automatic vs. Manual Memory Management
Explaining JavaScript's Garbage Collection.
Why manual memory management (like in C++) would have been a disaster for web authors.





Course start date: 1 september
Timing: 6pm (Mon-fri)
Hackathon will be organised after course completion
Join Premium Whatsapp Group: https://whatsapp.com/channel/0029Va6H0tbHVvTbcuT99Y1f
Class Notes : https://www.notion.so/Introduction-to-Javascript-2763a78e0e22809db99af584c1c5c6ec?source=copy_link
Code Link: https://github.com/coderarmy-notes/mern-stack-course
Twitter: https://x.com/rohit_negi9?s=21
Channel: ‪@CoderArmy9‬

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Time Stamp:
0:00 Introduction to the JavaScript
1:38 What is JavaScript?
4:16 Client-Server Interaction and the Browser’s Role
7:07 Why a New Language?
8:51 Reason 1: Ease of Learning for Web Developers
13:20 Reason 2: Security Limitations
17:58 Reason 3: Lightweight Design for Limited System Resources
19:15 Reason 4: Automatic Garbage Collection
21:11 Homework
21:15 Why JavaScript? A Quick Recap
25:19 How JavaScript Runs: The V8 Engine in Chrome
26:36 JavaScript Engines in Other Browsers (e.g., SpiderMonkey in Firefox)
27:26 What is the V8 Engine?
28:38 V8’s C++ Implementation and Compilation to Machine Code
39:59 Running JavaScript Outside the Browser
43:46 Installing Node.js
45:12 Running JavaScript with Node.js in VS Code
46:26 The Magic of Node.js
47:46 Wrapping Up



#javascript #webdevelopment #mernstack